CN104237298A - Method for testing shrinkage rate of electronic flat glass - Google Patents

Method for testing shrinkage rate of electronic flat glass Download PDF

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Publication number
CN104237298A
CN104237298A CN201410487131.7A CN201410487131A CN104237298A CN 104237298 A CN104237298 A CN 104237298A CN 201410487131 A CN201410487131 A CN 201410487131A CN 104237298 A CN104237298 A CN 104237298A
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China
Prior art keywords
print
sample
glass
measuring
measured
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CN201410487131.7A
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Chinese (zh)
Inventor
姜宏
赵会峰
冯秀劳
张振华
李长久
鲁鹏
有学军
苏俊
俞琳
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HAINAN AVIC SPECIAL GLASS MATERIALS CO Ltd
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HAINAN AVIC SPECIAL GLASS MATERIALS CO Ltd
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Priority to CN201410487131.7A priority Critical patent/CN104237298A/en
Publication of CN104237298A publication Critical patent/CN104237298A/en
Pending legal-status Critical Current

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Abstract

The invention mainly relates to a method for testing the shrinkage rate of electronic flat glass. The method comprises the following steps: drawing measurement reference lines e and f at the two ends of a sample to be tested of the electronic flat glass in the length direction; averagely dividing the sample to be tested into reference samples A and C and a measurement sample B in the width direction; measuring the distance between the measurement reference line e and the measurement reference line f on the sample B, performing reheating-cooling treatment on the sample B through a precision annealing furnace, measuring the displacement of the measurement reference lines of the sample B under an optical microscope, and calculating the shrinkage rates X1 and X2 of the middle upper edge and the middle lower edge of the sample B and the average shrinkage rate X of the sample B. According to the method, the measurement sample is subjected to reheating-cooling treatment through the precision annealing furnace, so that the annealing quality of the glass is improved; the shrinkage rate of the glass is calculated by measuring the length change of the glass sample before and after treatment in the precision annealing furnace through the optical microscope; the method has the characteristics of simplicity for operation and high measurement accuracy.

Description

The method of testing of electronic plane also retract rate
Technical field
The invention belongs to glass properties technical field of measurement and test, relate generally to the method for testing of a kind of electronic plane glass reheating in manufacturing process-cooled glass shrinkage factor.
Background technology
Flat-panel monitor has many advantages: thin and light and handy, and complete machine can be made portable; Voltage is low, without X-radiation, do not have flashing, do not produce electrostatic, thus can not insalubrity; Low in energy consumption, usable-battery is powered; Life-span is than length etc.Therefore flat-panel monitor has purposes extremely widely at military, civil area.And the substrate of flat-panel monitor and cover plate mainly adopt electronic plane glass, therefore electronic plane glass is as one of the main material of flat-panel monitor, is developed greatly.
Glass heats by carrying out more than once in process, will anneal roughly afterwards to it, during to prevent cooling and next step processing (cutting, brill, mill etc.) time glass destroyed.Glass also there will be the contraction of size after reheating annealing process process, may occur outage problem when shrinkage factor is not mated.Also retract rate is the new concept that electronic product industry emerges and produces after development, i.e. the change of glass reheating in electronic product manufacturing process-cooling generation size.Electronical display sheet glass strictly must control the shrinkage factor of glass, controls bad, has a strong impact on Quality of electronic products.Thus the accurate test of also retract rate seems particularly important.
The shrinkage factor of glass is not only relevant with glass ingredient, glass structure, with the annealing quality of glass, i.e. and glass internal stress size and distribute relevant.According to Adams and Williamson, glass result of study of annealing in annealing region is thought, square being directly proportional of stress relaxation speed and stress.Glass, in annealing process, due to its poor thermal conductivity, there will be larger thermograde in its body, thus produces thermal stress.
Summary of the invention
The object of the invention is the method for testing proposing a kind of electronic plane also retract rate, the method calculates the shrinkage factor of glass by the change using optical microscope measuring glass sample process anterior-posterior length in fine annealing stove, has simple to operate, that measuring accuracy is high feature.
The present invention adopts following technical proposals for completing foregoing invention object:
A method of testing for electronic plane also retract rate, described method of testing comprises the steps:
1) get the print to be measured of one block of electronic plane glass, mark measuring basis line e and f at the two ends of print length direction to be measured; Then print to be measured is on average divided into A, B, C tri-pieces in the width direction, wherein print A, print C are reference plate, and print B is for measuring sheet; By the distance on vernier caliper measurement print B between measuring basis line e and measuring basis line f, in order to avoid measuring basis line e, f tilt to bring test error, in recording, be worth L 1, under be worth L 2two length values; L 1, L 2unit be millimeter ;
2) print B is put in the box made of fire resistive material, then the box being placed with print B is placed in fine annealing stove, heats up according to the programming rate of 5 DEG C ~ 8 DEG C/min, be warmed up to 580 DEG C ~590 DEG C, be then incubated 3 ~ 6 minutes at this temperature, glass is heated evenly, carry out fine annealing according to the cooling velocity of 2 DEG C ~ 3 DEG C/min and be cooled to room temperature ;
3) take out through reheating-cooled print B, then print B is placed between print A and print C, and print B is parallel to print A, print C places; The displacement of print B measuring basis line is measured, △ L amplify the condition of 100 times at optical microscope under 1, △ L 2for the amount of contraction of print B left end, △ L 3, △ L 4for the amount of contraction of print B right-hand member, wherein, △ L 1, △ L 2, △ L 3with △ L 4unit be millimeter.
4) calculate upper in print B and in the shrinkage factor X on lower both sides 1and X 2and the average shrinkage ratio X of B print: wherein, X 1, X 2be ppm with the unit of X;
That is, X 1=(△ L 1+ △ L 3) * 10 6/ L 1
X 2?=?(△L 2?+?△L 4)?*10 6/?L 2
X?=?(X 1?+?X 2)/2。
The method of testing of a kind of electronic plane also retract rate that the present invention proposes, adopts fine annealing stove to carry out reheating-cooling processing to measurement print, improves the annealing quality of glass; Calculated the shrinkage factor of glass by the change using optical microscope measuring glass sample to process anterior-posterior length in fine annealing stove, there is simple to operate, that measuring accuracy is high feature.
Accompanying drawing explanation
Fig. 1 is print to be measured schematic diagram before treatment.
Fig. 2 is the test schematic diagram of print process post shrinkage amount to be measured.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 1 and Figure 2, a kind of method of testing of electronic plane also retract rate, described method of testing comprises the steps:
1) get the print to be measured of one block of electronic plane glass, in this embodiment, print to be measured is of a size of 150*90mm; Measuring basis line e and measuring basis line f is drawn respectively far from the marking pen of edge 1mm place 0.3mm thickness at the two ends of print length direction to be measured; Then print to be measured is on average divided into A, B, C tri-pieces in the width direction, wherein print A, print C are reference plate, and print B is for measuring sheet; By the distance on vernier caliper measurement print B between measuring basis line e and measuring basis line f, in order to avoid measuring basis line e, f tilt to bring test error, in recording, be worth L 1, under be worth L 2two length values; L 1, L 2unit be millimeter;
2) print B is put in the box made of fire resistive material, then the box being placed with print B is placed in fine annealing stove, under being warmed up to 580 DEG C ~ 590 DEG C temperature, be incubated 3 ~6 minutes, carry out fine annealing according to the cooling velocity of 2 DEG C ~ 3 DEG C/min and be cooled to room temperature;
3) take out through reheating-cooled print B, then print B is placed between print A and print C, and print B is parallel places with print A, print C; The displacement of print B measuring basis line is measured amplify the condition of 100 times at optical microscope under, measure the distance on measuring basis line e and print B between measuring basis line e on print A, measure the distance on measuring basis line e and print B between measuring basis line e on print C, the △ L obtained 1for amount of contraction, △ L in print B left end 2for the amount of contraction under in print B left end; Measure the distance on measuring basis line f and print B between measuring basis line f on print A, measure the distance on measuring basis line f and print B between measuring basis line f on print C, the △ L obtained 3for the amount of contraction in print B right-hand member, △ L 4for the amount of contraction under in print B right-hand member; Wherein, △ L 1, △ L 2, △ L 3with △ L 4unit be millimeter;
4) calculate upper in print B and in the shrinkage factor X on lower both sides 1, X 2and the average shrinkage ratio X of B print; Wherein, X 1, X 2be ppm with the unit of X;
That is, X 1=(△ L 1+ △ L 3) * 10 6/ L 1
X 2?=?(△L 2?+?△L 4)?*10 6/?L 2
X?=?(X 1?+?X 2)/2；
According to above method of testing, often kind of glass sample prepares two groups of test samples respectively, tests, the consistance of observation test result.The shrinkage factor of test 4 kinds of glass, experimental result is as table 1, and consistance is good, and reliable test result is described.
Table 1 also retract rate test result

Claims (1)

1. a method of testing for electronic plane also retract rate, is characterized in that: described method of testing comprises the steps:
1) get the print to be measured of one block of electronic plane glass, mark measuring basis line e and f at the two ends of print length direction to be measured; Then print to be measured is on average divided into A, B, C tri-pieces in the width direction, wherein print A, print C are reference plate, and print B is for measuring sheet; By the distance on vernier caliper measurement print B between measuring basis line e and measuring basis line f, in recording, be worth L 1, under be worth L 2; L 1, L 2unit be millimeter ;
2) print B is put in the box made of fire resistive material, then the box being placed with print B is placed in fine annealing stove, heats up according to the programming rate of 5 DEG C ~ 8 DEG C/min, be warmed up to 580 DEG C ~590 DEG C, be then incubated 3 ~ 6 minutes at this temperature, glass is heated evenly, carry out fine annealing according to the cooling velocity of 2 DEG C ~ 3 DEG C/min and be cooled to room temperature ;
3) take out through reheating-cooled print B, then print B is placed between print A and print C, and print B is parallel to print A, print C places; The displacement of print B measuring basis line is measured, △ L amplify the condition of 100 times at optical microscope under 1, △ L 2for the amount of contraction of print B left end, △ L 3, △ L 4for the amount of contraction of print B right-hand member, wherein, △ L 1, △ L 2, △ L 3with △ L 4unit be millimeter;
4) calculate upper in print B and in the shrinkage factor X on lower both sides 1and X 2and the average shrinkage ratio X of B print: wherein, X 1, X 2be ppm with the unit of X;
That is, X 1=(△ L 1+ △ L 3) * 10 6/ L 1
X 2?=?(△L 2?+?△L 4)?*10 6/?L 2
X?=?(X 1?+?X 2)/2。
CN201410487131.7A 2014-09-23 2014-09-23 Method for testing shrinkage rate of electronic flat glass Pending CN104237298A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091843A (en) * 2015-06-25 2015-11-25 深圳市华星光电技术有限公司 Method for measuring film contraction
CN105301042A (en) * 2015-11-20 2016-02-03 海南中航特玻科技有限公司 Method using dilatometer to measure electronic flat glass shrinkage
CN105403589A (en) * 2015-12-23 2016-03-16 芜湖东旭光电装备技术有限公司 Method for measuring shrinkage of amorphous material
CN105510378A (en) * 2015-12-29 2016-04-20 东旭科技集团有限公司 Determination method of dilatation coefficient of glass
CN105527313A (en) * 2015-12-30 2016-04-27 东旭科技集团有限公司 A glass shrinkage measuring method
CN105717154A (en) * 2016-05-05 2016-06-29 东旭科技集团有限公司 Device and method for measuring shrinking percentage of panels
JP2017065981A (en) * 2015-09-30 2017-04-06 ＡｖａｎＳｔｒａｔｅ株式会社 Method and device for measuring thermal shrinkage rate of glass substrate, and method for manufacturing glass substrate
CN108152324A (en) * 2018-01-31 2018-06-12 彩虹显示器件股份有限公司 A kind of method tested glass and be heat-shrinked
CN108426913A (en) * 2018-06-19 2018-08-21 四川旭虹光电科技有限公司 A kind of test method of also retract rate
CN108445037A (en) * 2018-01-23 2018-08-24 上海恩捷新材料科技股份有限公司 A kind of test method of stress in thin films
CN108675633A (en) * 2018-07-24 2018-10-19 彩虹显示器件股份有限公司 A kind of electronic glass and its shrinking percentage test method of low-shrinkage
CN109142687A (en) * 2018-08-14 2019-01-04 佛山市天宝利硅工程科技有限公司 A kind of mold and its method measuring sealant linear shrinkage
CN109187623A (en) * 2018-08-01 2019-01-11 彩虹显示器件股份有限公司 A method of measurement base plate glass shrinking percentage
CN109187622A (en) * 2018-07-24 2019-01-11 彩虹显示器件股份有限公司 A kind of measurement method that high-resolution display is shunk with electronics glass heat

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JPH06144856A (en) * 1992-11-06 1994-05-24 Asahi Glass Co Ltd Method for measuring very small amount of thermal shrinkage of plate glass
CN101957332A (en) * 2010-09-27 2011-01-26 东莞市华立实业股份有限公司 Heat contractibility rate measuring method for furniture thermoplastic plastic edge sealing stripes
CN102507635A (en) * 2011-10-14 2012-06-20 上海伊索热能技术有限公司 Method for measuring heating shrinkage rate of ceramic fiber product
CN103308548A (en) * 2013-07-06 2013-09-18 国家烟草质量监督检验中心 Measuring method of thermal shrinkage rate of cigarette packaging film
CN103454302A (en) * 2013-09-18 2013-12-18 四川旭虹光电科技有限公司 Method for measuring shrinkage factor of PDP (Plasma Display Panel) glass

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH06144856A (en) * 1992-11-06 1994-05-24 Asahi Glass Co Ltd Method for measuring very small amount of thermal shrinkage of plate glass
CN101957332A (en) * 2010-09-27 2011-01-26 东莞市华立实业股份有限公司 Heat contractibility rate measuring method for furniture thermoplastic plastic edge sealing stripes
CN102507635A (en) * 2011-10-14 2012-06-20 上海伊索热能技术有限公司 Method for measuring heating shrinkage rate of ceramic fiber product
CN103308548A (en) * 2013-07-06 2013-09-18 国家烟草质量监督检验中心 Measuring method of thermal shrinkage rate of cigarette packaging film
CN103454302A (en) * 2013-09-18 2013-12-18 四川旭虹光电科技有限公司 Method for measuring shrinkage factor of PDP (Plasma Display Panel) glass

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091843B (en) * 2015-06-25 2018-01-23 深圳市华星光电技术有限公司 A kind of method for measuring film contracting
CN105091843A (en) * 2015-06-25 2015-11-25 深圳市华星光电技术有限公司 Method for measuring film contraction
JP2017065981A (en) * 2015-09-30 2017-04-06 ＡｖａｎＳｔｒａｔｅ株式会社 Method and device for measuring thermal shrinkage rate of glass substrate, and method for manufacturing glass substrate
CN105301042A (en) * 2015-11-20 2016-02-03 海南中航特玻科技有限公司 Method using dilatometer to measure electronic flat glass shrinkage
CN105403589A (en) * 2015-12-23 2016-03-16 芜湖东旭光电装备技术有限公司 Method for measuring shrinkage of amorphous material
CN105510378A (en) * 2015-12-29 2016-04-20 东旭科技集团有限公司 Determination method of dilatation coefficient of glass
CN105527313A (en) * 2015-12-30 2016-04-27 东旭科技集团有限公司 A glass shrinkage measuring method
CN105527313B (en) * 2015-12-30 2019-01-11 东旭科技集团有限公司 The measuring method of also retract rate
CN105717154A (en) * 2016-05-05 2016-06-29 东旭科技集团有限公司 Device and method for measuring shrinking percentage of panels
CN108445037A (en) * 2018-01-23 2018-08-24 上海恩捷新材料科技股份有限公司 A kind of test method of stress in thin films
CN108152324A (en) * 2018-01-31 2018-06-12 彩虹显示器件股份有限公司 A kind of method tested glass and be heat-shrinked
CN108426913A (en) * 2018-06-19 2018-08-21 四川旭虹光电科技有限公司 A kind of test method of also retract rate
CN108675633A (en) * 2018-07-24 2018-10-19 彩虹显示器件股份有限公司 A kind of electronic glass and its shrinking percentage test method of low-shrinkage
CN109187622A (en) * 2018-07-24 2019-01-11 彩虹显示器件股份有限公司 A kind of measurement method that high-resolution display is shunk with electronics glass heat
CN109187623A (en) * 2018-08-01 2019-01-11 彩虹显示器件股份有限公司 A method of measurement base plate glass shrinking percentage
CN109142687A (en) * 2018-08-14 2019-01-04 佛山市天宝利硅工程科技有限公司 A kind of mold and its method measuring sealant linear shrinkage

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